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Table 1 Characteristics of LIFE-Adult participants, the Leipzig population, and short questionnaire participants by sex and age

From: Evaluating selection bias in a population-based cohort study with low baseline participation: the LIFE-Adult-Study

 

Men

Women

Age, years

40 to 49

50 to 59

60 to 69

70 to 79

40 to 49

50 to 59

60 to 69

70 to 79

Married, %

 LIFE-Adult participants

48.8

65.3

80.7

85.3

52.7

65.8

68.1

55.5

 Leipzig population

44.7

60.5

69.7

84.6

49.2

59.2

60.2

57.5

 SQ participants

48.2

60.2

73.5

81.9

56.3

60.5

66.0

55.9

Highly educated, %

 LIFE-Adult participants

  1st stage tertiary education

46.6

50.6

62.1

73.2

51.0

51.5

47.7

43.7

  Hochschulreifea

34.7

32.6

34.8

34.8

34.7

31.4

27.4

21.1

 Leipzig population

  1st stage tertiary education

35.4

34.6

(40.2)

56.0

45.5

41.1

35.3

36.8

 SQ participants

  Hochschulreifea

32.4

24.8

27.1

27.8

33.2

26.9

25.2

16.5

Employed, %

 LIFE-Adult participants

90.7

84.0

31.3

4.2

90.9

83.9

26.1

2.2

 Leipzig population

86.2

79.6

(38.9)

/

84.6

75.7

(24.9)

/

 SQ participants

85.2

76.6

23.9

2.9

83.3

75.4

17.2

1.9

Current nonsmoker, %

 LIFE-Adult participants

  Nonsmokers of tobacco

66.1

68.7

82.2

93.0

71.1

71.4

87.0

94.6

  Nonsmokers of cigarettes

67.4

70.0

83.9

94.4

71.4

71.7

87.2

94.6

 Leipzig population

  Nonsmokers of tobacco

57.7

63.1

73.6

92.1

70.0

74.7

85.0

97.0

 SQ participants

  Nonsmokers of cigarettes

59.8

62.3

75.8

87.5

67.3

67.1

86.0

92.9

Poor physical condition, %

  LIFE-Adult participants

2.2

3.7

4.6

4.6

3.0

4.2

5.0

6.0

  SQ participants

2.7

5.3

6.6

11.7

3.0

3.6

4.9

9.9

Myocardial infarction, %

 LIFE-Adult participants

0.5

2.5

5.2

9.2

0.1

0.9

1.8

2.6

 SQ participants

0.7

4.9

10.0

13.1

0.7

1.1

2.5

4.4

Stroke, %

 LIFE-Adult participants

0.7

2.1

3.4

5.9

0.4

1.9

2.2

3.4

 SQ participants

0.8

2.3

5.8

9.3

0.2

2.3

3.3

5.1

Diabetes, %

 LIFE-Adult participants

3.4

9.7

20.5

23.0

1.8

6.3

13.4

19.8

 SQ participants

6.0

13.2

30.1

34.7

3.5

12.7

21.0

28.1

Cancer, %

 LIFE-Adult participants

2.2

4.6

12.1

24.0

6.7

8.2

13.9

18.9

 SQ participants

2.9

7.1

10.8

21.5

4.8

10.1

14.7

18.0

  1. Data for the Leipzig population: Percentages corresponding to less than 7000 cases are marked by “/”, percentages corresponding to less than 10,000 cases are given in parenthesis. aHochschulreife = technical college or university entrance qualification, SQ = short questionnaire